Read some of the threads concerning a prisoner being executed. May he burn in hell" is a common enough expression on those threads. Occasionally a Christian will weigh in with, "I hope he found the Lord before he died" but the former expression is more common than the latter.
I know, and unfortunately, sometimes I am guilty of that too. However, a question for you: we can probably be about 99.999999% sure people like Nero, Caligula, Hitler, Stalin, Mao, Pol Pot, Saddam Hussein, are in Hades, along with the rich man who would not help Lazarus, awaiting the Lake of Fire. I guess it does not matter a hill of beans, because their fate is sealed forever, and forever, but I wonder if we should think that we hope they enjoy the long hard eternity of eternities they will have to endure? I know it is kind of a meaningless question, but I was wondering.